API STD 547
General Purpose Form-wound Squirrel Cage Induction Motors-185 kW (250 hp) through 2240 kW (3000 hp)
|Publication Date:||1 May 2017|
This standard covers the requirements for form-wound induction motors for use in general purpose petroleum, chemical and other industrial severe duty applications and with the following characteristics:
a) rated 185 kW [250 horsepower (hp)] through 2240 kW (3000 hp) for four-, six-, and eight-pole speeds;
b) rated less than 600 kW (800 hp) for two-pole (3000 or 3600 RPM) motors of totally enclosed construction;
c) rated less than 930 kW (1250 hp) for two-pole motors of WP-II type enclosures;
d) rated less than 375 kW (500 hp) for vertical motors;
e) drive centrifugal loads;
f) drive loads having inertia values not exceeding those listed in NEMA MG 1 Part 20; and
g) operated as motors, not induction generators.
NOTE Motors larger than that covered above and motors in other applications should be specified in accordance with API 541.
Application of the API Monogram-If the product is manufactured at a facility licensed by API and it is intended to be supplied bearing the API Monogram, the requirements of Annex A apply.
A datasheet is provided in Annex B. The purchaser is not required to complete and provide the datasheet for pre-configured or catalog based motors manufactured with standard features. However, the purchaser shall provide the completed datasheet to specify motor requirements for a specific application and/or with options and features beyond the above description. A datasheet guide, which provides detailed information to assist with completion of the datasheet, is provided in Annex C.